[ 
https://issues.apache.org/jira/browse/YARN-4416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15043293#comment-15043293
 ] 

Hadoop QA commented on YARN-4416:
---------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s 
{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s 
{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m 0s 
{color} | {color:red} The patch doesn't appear to include any new or modified 
tests. Please justify why no new tests are needed for this patch. Also please 
list what manual steps were performed to verify this patch. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m 
13s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 31s 
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 32s 
{color} | {color:green} trunk passed with JDK v1.7.0_85 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
13s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 38s 
{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
15s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 
19s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 25s 
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 28s 
{color} | {color:green} trunk passed with JDK v1.7.0_85 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 
38s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 31s 
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 31s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 34s 
{color} | {color:green} the patch passed with JDK v1.7.0_85 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 34s 
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 13s 
{color} | {color:red} Patch generated 2 new checkstyle issues in 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 (total was 139, now 137). {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 39s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
16s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 
0s {color} | {color:green} Patch has no whitespace issues. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m 30s 
{color} | {color:red} 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 introduced 1 new FindBugs issues. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 25s 
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 29s 
{color} | {color:green} the patch passed with JDK v1.7.0_85 {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 64m 57s {color} 
| {color:red} hadoop-yarn-server-resourcemanager in the patch failed with JDK 
v1.8.0_66. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 65m 14s {color} 
| {color:red} hadoop-yarn-server-resourcemanager in the patch failed with JDK 
v1.7.0_85. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red} 0m 16s 
{color} | {color:red} Patch generated 1 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 149m 28s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| FindBugs | 
module:hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 |
|  |  
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.AbstractCSQueue.getAbsoluteUsedCapacity()
 is unsynchronized, 
org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.AbstractCSQueue.setAbsoluteUsedCapacity(float)
 is synchronized  At AbstractCSQueue.java:synchronized  At 
AbstractCSQueue.java:[line 138] |
| JDK v1.8.0_66 Failed junit tests | 
hadoop.yarn.server.resourcemanager.TestClientRMTokens |
|   | hadoop.yarn.server.resourcemanager.TestAMAuthorization |
| JDK v1.7.0_85 Failed junit tests | 
hadoop.yarn.server.resourcemanager.TestClientRMTokens |
|   | hadoop.yarn.server.resourcemanager.TestAMAuthorization |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:0ca8df7 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12775929/YARN-4416.v1.001.patch
 |
| JIRA Issue | YARN-4416 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux 8cb050b17691 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed 
Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | trunk / 86c95cb |
| findbugs | v3.0.0 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-YARN-Build/9876/artifact/patchprocess/diff-checkstyle-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-YARN-Build/9876/artifact/patchprocess/new-findbugs-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager.html
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/9876/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-jdk1.8.0_66.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-YARN-Build/9876/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-jdk1.7.0_85.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-YARN-Build/9876/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-jdk1.8.0_66.txt
 
https://builds.apache.org/job/PreCommit-YARN-Build/9876/artifact/patchprocess/patch-unit-hadoop-yarn-project_hadoop-yarn_hadoop-yarn-server_hadoop-yarn-server-resourcemanager-jdk1.7.0_85.txt
 |
| JDK v1.7.0_85  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/9876/testReport/ |
| asflicense | 
https://builds.apache.org/job/PreCommit-YARN-Build/9876/artifact/patchprocess/patch-asflicense-problems.txt
 |
| modules | C: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 U: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager
 |
| Max memory used | 76MB |
| Powered by | Apache Yetus   http://yetus.apache.org |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/9876/console |


This message was automatically generated.



> Deadlock due to synchronised get Methods in AbstractCSQueue
> -----------------------------------------------------------
>
>                 Key: YARN-4416
>                 URL: https://issues.apache.org/jira/browse/YARN-4416
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacity scheduler, resourcemanager
>    Affects Versions: 2.7.1
>            Reporter: Naganarasimha G R
>            Assignee: Naganarasimha G R
>            Priority: Minor
>         Attachments: YARN-4416.v1.001.patch, deadlock.log
>
>
> While debugging in eclipse came across a scenario where in i had to get to 
> know the name of the queue but every time i tried to see the queue it was 
> getting hung. On seeing the stack realized there was a deadlock but on 
> analysis found out that it was only due to *queue.toString()* during 
> debugging as {{AbstractCSQueue.getAbsoluteUsedCapacity}} was synchronized.
> Still i feel {{AbstractCSQueue}}'s getter methods need not be synchronized 
> and better be handled through read and write locks.



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